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CN-224234185-U - Air-cooled radiator

CN224234185UCN 224234185 UCN224234185 UCN 224234185UCN-224234185-U

Abstract

The utility model discloses an air-cooled radiator, which relates to the technical field of air-cooled radiators and comprises a high-power chip, wherein a radiating mechanism is arranged above the high-power chip and comprises a phase-change heat transfer unit, a rib convection unit and a fixed regulating unit, the phase-change heat transfer unit is arranged in a central area of the radiating mechanism and comprises a substrate, a cavity wall is integrally arranged on the substrate, a central cavity is arranged in the cavity wall, a plurality of central cavity bottom microstructures are arranged in the bottom surface of the central cavity, liquid working mediums are hermetically packaged in the central cavity, and the heat transfer resistance of the central area is reduced to be less than 30% of that of the traditional single-path conduction by combining the strengthening effect of the microstructures on boiling heat transfer through the evaporation-condensation phase-change process of the liquid working mediums in the central cavity, so that the radiating power is improved by more than 100% under the same volume.

Inventors

  • HU XUEGONG
  • XIANG LIFENG

Assignees

  • 中科微槽群(北京)节能技术开发有限公司

Dates

Publication Date
20260512
Application Date
20250529

Claims (6)

  1. 1. The air-cooled radiator comprises a high-power chip (15) and is characterized in that a radiating mechanism is arranged above the high-power chip (15), and the radiating mechanism comprises: The phase change heat transfer unit is arranged in the central area of the heat dissipation mechanism and comprises a base plate (8), a cavity wall (16) is integrally arranged on the base plate (8), a central cavity (13) is arranged in the cavity wall (16), a plurality of central cavity bottom microstructures (17) are arranged in the central cavity bottom (14), a liquid working medium (19) is sealed and packaged in the central cavity (13), and the central cavity (13) realizes high-strength evaporation and boiling enhanced heat transfer through the phase change of the liquid working medium (19) in a vacuum state; The fin convection unit is arranged in the peripheral area of the base plate (8) and is used for forced convection heat exchange of air; the fixed adjusting unit is arranged above the base plate (8) and used for optimizing air flow distribution and improving convection heat exchange coefficients.
  2. 2. The air-cooled radiator as set forth in claim 1, wherein the phase-change heat transfer unit further comprises a central cavity cover plate (2) fixedly mounted on the top of the cavity wall (16), a central cavity boss (3) is arranged outside the cavity wall (16) for enhancing structural strength, and a round hole (4) is formed in the central cavity boss (3) for preventing structural deformation of the central cavity boss (3).
  3. 3. An air-cooled heat sink according to claim 1 wherein the fin convection unit comprises an inner fin (5), a middle fin (6) and an outer fin (7) fixedly mounted on a base plate (8), the inner Duan Lepian (5) being connected to the side wall of the central cavity, the inner Duan Lepian (5), middle fin (6) and outer fin (7) being arranged crosswise.
  4. 4. An air-cooled radiator according to claim 2, wherein the fixed adjusting unit comprises an outer column (9) fixedly arranged on a base plate (8), a packaging nozzle (10) and a distance cap (1) are fixedly arranged at the top of the central cavity cover plate (2), the top of the base plate (8) is fixedly arranged on four groups of outer columns (9), a fan (11) is fixedly connected with the outer column (9) through a fan fixing screw (12) at the top of the base plate (8), and the distance between the fan (11) and the central cavity cover plate (2) is determined by the height of the distance cap (1).
  5. 5. An air-cooled radiator according to claim 3, wherein gaps (18) are arranged among the inner Duan Lepian, the middle-section fins (6) and the outer-section fins (7), and a multi-stage air flow channel is formed by separating the inner-section fins (5), the middle-section fins (6) and the outer-section fins (7) through the gaps (18), so that air driven by the fan (11) can uniformly flow through the surfaces of the fins.
  6. 6. An air-cooled radiator according to claim 1, wherein the central cavity floor microstructure (17) is in the shape of a micro cone or micro cylinder and the liquid working medium (19) is ethanol, water or freon.

Description

Air-cooled radiator Technical Field The utility model relates to the technical field of air-cooled radiators, in particular to an air-cooled radiator. Background The chip microstructure air-cooled radiator is a device for cooling a chip by utilizing metal heat conduction and air heat convection. According to the patent name, the novel air-cooled radiator (patent publication number: CN219349470U, patent publication number: 2023-07-14) comprises radiating fins, a base is arranged at the bottom of each radiating fin, a radiating fan is arranged on the base and positioned in the middle of each radiating fin, and an included angle between a plane where the radiating fan is positioned and a plane where the base is positioned is 5-15 degrees. The air direction is changed by arranging the cooling fan in an inclined way, so that heat dissipation is accelerated, heat is carried out by the fixed air direction, the effect of direct heat dissipation and directional heat dissipation in a heat dissipation area is achieved, the power of a main fan of a case is reduced, noise is reduced, the heat dissipation speed is improved, and the air conditioner is suitable for being used in a closed case and an oriented air duct. Based on the prior art, the existing air-cooled radiator has the following problems of large volume, heavy weight, low heat dissipation power and poor heat dissipation performance, and therefore, the utility model provides the air-cooled radiator. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides an air-cooled radiator, which solves the problems of large volume, heavy weight, low heat dissipation power and poor heat dissipation performance of the existing air-cooled radiator. The utility model is realized by the following technical scheme that the air-cooled radiator comprises a high-power chip, a radiating mechanism is arranged above the high-power chip, and the radiating mechanism comprises: The phase change heat transfer unit is arranged in the central area of the heat dissipation mechanism and comprises a substrate, a cavity wall is integrally arranged on the substrate, a central cavity is arranged in the cavity wall, a plurality of central cavity bottom microstructures are arranged in the central cavity bottom, liquid working media are sealed and packaged in the central cavity, and the central cavity realizes high-strength evaporation and boiling enhanced heat transfer through the phase change of the liquid working media in a vacuum state; The fin convection unit is arranged in the peripheral area of the base plate and is used for forced convection heat exchange of air; The fixed adjusting unit is arranged above the substrate and used for optimizing air flow distribution and improving convection heat exchange coefficients. Preferably, the phase change heat transfer unit further comprises a central cavity cover plate fixedly mounted at the top of the cavity wall, a central cavity boss is arranged outside the cavity wall and used for enhancing structural strength, and a round hole is formed in the central cavity boss and used for preventing structural deformation of the central cavity boss. Preferably, the rib convection unit comprises an inner section rib, a middle section rib and an outer section rib which are fixedly arranged on the base plate, wherein the inner section rib is connected with the side wall of the central cavity, and the inner section rib, the middle section rib and the outer section rib are arranged in a crossed manner. Preferably, the fixed adjusting unit comprises an outer edge upright post on a fixed mounting substrate, a packaging nozzle and a distance cap are fixedly mounted at the top of the central cavity cover plate, the top of the substrate is fixedly mounted on four groups of outer edge upright posts, a fan is fixedly connected with the outer edge upright posts through a fan fixing screw at the top of the substrate, and the distance between the fan and the central cavity cover plate is determined by the height of the distance cap. Preferably, gaps are arranged among the inner section ribs, the middle section ribs and the outer section ribs, and the inner section ribs, the middle section ribs and the outer section ribs are separated through the gaps to form a multi-stage airflow channel, so that air driven by the fan can uniformly flow through the surfaces of the sections of ribs. Preferably, the microstructure of the bottom surface of the central cavity is in a micro conical or micro cylindrical shape, and the liquid working medium is ethanol, water or freon. The utility model provides an air-cooled radiator. Compared with the prior art, the method has the following beneficial effects: 1. According to the air-cooled radiator, through the evaporation-condensation phase change process of the liquid working medium in the central cavity and the strengthening effect of the microstructure on boiling heat transfer, the heat transfer resista